Afunction is a pairing between two set of number in which each element of the first set is paired with exactly one element of the second set.
Thedomainis the first coordinate in a set of ordered pairs.
Therangeis the second coordinate in a set of ordered pairs.
{(16, 23),( 2, 46),(45, 23),(72, 63)}
Domain-16, 2, 45,72 Range-23, 46, 23, 63 These coordinates are a function.
{( 45, 78), (65, 23),(45,30),( 14,23)}
Domain-45, 65, 45, 14 Range- 78, 23, 30, 23 These coordinates are not a function because there cannot be any duplicate numbers in the domain, but their can be in the range.
~Domain and Range~
A function is a pairing between two set of number in which each element of the first set is paired with exactly one element of the second set.
The domain is the first coordinate in a set of ordered pairs.
The range is the second coordinate in a set of ordered pairs.
{(16, 23),( 2, 46),(45, 23),(72, 63)}
Domain- 16, 2, 45,72
Range- 23, 46, 23, 63
These coordinates are a function.
{( 45, 78), (65, 23),(45,30),( 14,23)}
Domain- 45, 65, 45, 14
Range- 78, 23, 30, 23
These coordinates are not a function because there cannot be any duplicate numbers in the domain, but their can be in the range.